Pentel Energel Rtx, Deluxe Rtx, Deluxe, Metal Tip Pen Refills, Medium Point, Black Ink, Pack of 12 Satisfy your EnerGel needs with this refill that provides quality and value It is equipped with rich, acid-free, and archival safe ink that is non-smearing and quick-drying, guaranteeing that your documents will be archived safely Quick-drying ink is also great for lefties as writing won't smear away with touch.